Oppo R11 Plus mobile was launched in June 2017. The phone comes with a 6.00-inch touchscreen display offering a resolution of 1080x1920 pixels. Oppo R11 Plus is powered by an octa-core Qualcomm ...

Acer Aspire R11 is a Chrome OS laptop with a 11.60-inch display that has a resolution of 1366x768 pixels. It is powered by a Celeron Dual Core processor and it comes with 4GB of RAM. The Acer Aspire ...

根据化学成分和环境影响，制冷剂可分为四代： 第一代制冷剂：氯氟烃类（CFCs），如CFC-11（R11）、CFC-12（R12），因破坏臭氧层已被淘汰。 第二代制冷剂：氢氯氟烃（HCFCs），如HCFC-22（R22），对臭氧层破坏较小，但仍具有较高GWP值，正逐步被淘汰。 第三代制冷剂 ...